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EC number: 284-366-9
CAS number: 84852-53-9
Summary Results: Based On Mean, Measured Test Concentrations
Treatment Groups: Control; Solvent Control; 256 ng/L (measured); 356 ng/L (measured)
Max. Acceptable Toxicant Concentration (ng/L)
21-Day EC50 – Immobility (ng/L)
95% Conf. Interval (ng/L)
21-Day EC10 – Reproduction (ng/L)
21-Day EC50 – Reproduction (ng/L)
Summary of Survival, Reproduction and Growth ofDaphnia magnaExposed to 14C-DBDPE for 21 Days
Mean No. Neonates
Per Reproductive Day
+/- Std. Dev.
Per Adult at
The Beginning of the Test
11.8 +/- 1.3
161.3 +/- 18
4.7 +/- 0.050
11.0 +/- 0.72
144.8 +/- 4.5
4.6 +/- 0.15
11.4 +/- 1.1
153.0 +/- 15
4.7 +/- 0.12
12.5 +/- 0.41
172.0 +/- 11
12.8 +/- 0.29
178.8 +/- 4.1
4.8 +/- 0.082
1There were no statistically-significant differences in percent survival (Fisher’s Exact test, p>0.05), reproduction (Dunnett one-tailed test, p>0.05) or length (Bonferroni t-test, p>0.05) when compared to the pooled control.
The cladoceran, Daphnia magna, was exposed to 14C-decabromodiphenyl
ethane at mean
measured concentrations of 256 and 356 ng/L under flow-through
conditions for 21 days. There were no
statistically significant treatment-related effects on survival,
reproduction or growth at concentrations
≤356 ng/L. Consequently, the NOEC, based on the results of the study,
was 356 ng/L. The LOEC was
>356 ng/L and the MATC was calculated to be >356 ng/L. The 21-day EC50
value for adult immobility
was >356 ng/L, the highest concentration tested. The 21-day EC10 and
EC50 values for reproduction was
>356 ng/L, the highest concentration tested.
The test concentration was limited by the solubility in the test medium
and was the maximum concentration that could be obtained.
Therfore the substance does not show any effects in the study at the
maximum obtainable concentration in the test medium that was 356 ng/L.
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